diff --git a/src/libretro/UtilRetro.h b/src/libretro/UtilRetro.h
index 6910f506..edf4df79 100644
--- a/src/libretro/UtilRetro.h
+++ b/src/libretro/UtilRetro.h
@@ -20,11 +20,16 @@ extern bool skipSaveGameBattery;
 extern bool skipSaveGameCheats;
 #define MAX_CHEATS 100
 
-const char gb_image_header[]={
-0xce, 0xed, 0x66, 0x66, 0xcc, 0x0d, 0x00, 0x0b, 0x03, 0x73, 0x00,
-0x83, 0x00, 0x0c, 0x00, 0x0d, 0x00, 0x08, 0x11, 0x1f, 0x88, 0x89,
-0x00, 0x0e, 0xdc, 0xcc, 0x6e, 0xe6, 0xdd, 0xdd, 0xd9, 0x99, 0xbb,
-0xbb, 0x67, 0x63, 0x6e, 0x0e, 0xec, 0xcc, 0xdd, 0xdc, 0x99, 0x9f,
-0xbb, 0xb9, 0x33, 0x3e};
+const char gb_image_header[] = 
+{
+   static_cast<const char>
+   (
+      0xce, 0xed, 0x66, 0x66, 0xcc, 0x0d, 0x00, 0x0b, 0x03, 0x73, 0x00,
+      0x83, 0x00, 0x0c, 0x00, 0x0d, 0x00, 0x08, 0x11, 0x1f, 0x88, 0x89,
+      0x00, 0x0e, 0xdc, 0xcc, 0x6e, 0xe6, 0xdd, 0xdd, 0xd9, 0x99, 0xbb,
+      0xbb, 0x67, 0x63, 0x6e, 0x0e, 0xec, 0xcc, 0xdd, 0xdc, 0x99, 0x9f,
+      0xbb, 0xb9, 0x33, 0x3e
+   )
+};
 
 #endif // _VBA_UTIL_RETRO_H